ASTROSAT CZTI

Data Quality Report

Orbit 50337

Creation date: 2025-01-18T10:33:12.820881
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C09_003T01_9000006442_50337cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50337cztM0_level2_quad_clean.evt
Size (bytes)955,535,04078,454,080
Size911.3 MB 74.8 MB
Events in quadrant A5,163,322635,585
Events in quadrant B4,685,603689,358
Events in quadrant C8,926,615480,824
Events in quadrant D16,056,69484,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200137
B0186663
C0313564
D0524864

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69543525.061835%
B69573444.944660%
C6956182726.265095%
D6955614888.396837%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7081 6960 222 222 3.14% 3.19%
B 7082 6961 183 183 2.58% 2.63%
C 7081 6958 1640 1640 23.16% 23.57%
D 7080 6956 5554 5554 78.45% 79.84%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 248 626745 3397.37 746 727 184.3
A 3 231 267356 1446.98 746 727 184.3
A 4 3 197287 1066.72 746 727 184.3
B 1 238 528634 3361.68 742 717 157.0
B 10 44 219662 1394.2 742 717 157.0
B 12 0 109220 690.93 742 717 157.0
C 15 127 2117566 11418.59 667 660 185.4
C 0 208 1260331 6794.67 667 660 185.4
C 15 196 1155697 6230.27 667 660 185.4
D 7 61 8727647 102252.28 292 280 85.4
D 11 245 2904104 34022.02 292 280 85.4
D 15 108 615555 7208.73 292 280 85.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter